Suppose that you want to estimate average income in a population. if the standard deviation of income in the population is $1,000, approximately how many people do you need to sample in order to have a 95% confidence interval around your estimate of +/- $40? *

2401

Step-by-step explanation:

Given that we want to estimate average income in a population.

The standard deviation of income in the population is $1,000

We want confidence interval around our estimate to be +/- $40

i.e Margin of error = 40

We know that margin of error = Std error * Z critical for 95%

i.e.

Std error =

Together we get

b.-4 units

all you   do is count how many times you move

answer: entity is prob the answer

step-by-step explanation: